imary and RH Secondary main discharge nozzles Jets 4 should be used in the primaries and 76 in the seconda the chart on page 8 for other applicable carburetor 296 427 454 The stock ... with open plen intake i fold the jetting should be staggered left front 80 right front 76 left rear 76 and right rear 78 If richer or leaner mixture is desired jets can be selecte